It is possible that the main title of the report Marfan Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
As Jenny points out, being able to lisp the alphabet song at age two has little to do with 'knowing' the alphabet. And, yes, most children learn the letters by sight and sound in kindergarten, although most are capable of learning this information sooner if diligently taught by parents or others.
Kids usually begin to: 1  recognize familiar signs and labels, especially on signs and containers. 2  make up rhymes or silly phrases. 3  recognize and write some of the letters of the alphabet (a good goal to strive for is 12-15 letters)  read and write their 1  names. name beginning letters or sounds of words.  match some letters to their sounds.